P2466Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 3)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2466 is the general circuit code for the third exhaust temperature probe in the bank 2 exhaust path, so it only appears on engines with two separate aftertreatment lines. No manufacturer documents this exact code publicly. The bank 1 counterpart P242A shows how makers fill such a general code: Ford's 2023 diesels use it for a probe that departs more than 80 °C from its modelled value for 20 s, while other makers attach open-circuit detection to it. CARB requires every emission-relevant sensor to be checked for circuit continuity and plausibility. Expect the controller to distrust the reading, to pause regeneration or DEF dosing that relies on it and to light the MIL. Clear low and high signal faults of this probe go to P2468 and P2469 instead.
- What you may notice
- MIL on
- Implausible or missing value for this probe in live data
- Filter regeneration or DEF dosing suspended
- Likely causes
- LikelyTemperature probe failed internally or open
- PossibleConnector or wiring near the exhaust damaged by heat
- RareProbe loose or not reaching into the gas stream
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.